Two-sided printing; Two-sided scanning; Scan to email/PDF; Strong Security. Print, copy, scan, fax (optional). Print speed up to 70 ppm (black). The ultimate workflow experience Boost office productivity with blazing-fast print and scan speeds, and effortless management.[1]. Dynamic security enabled printer Certain HP printers are intended to work only with cartridges that have a new or reused HP chip or electronic circuitry. These printers use dynamic security measures to block cartridges using a non-HP chip or electronic circuitry. Periodic firmware updates will maintain the effectiveness of these measures and block cartridges that previously worked. Reused HP chips and electronic circuitry enable the use of reused, remanufactured, and refilled cartridges. Printing. Print technology. Laser. Printing. Mono printing. Duplex printing. Yes. Duplex printing mode. Auto. Maximum resolution. 1200 x 1200 DPI. Print resolution black. 600 x 600 DPI. Print speed (black, normal quality, A4/US Letter). 70 ppm. Print speed (black, normal quality, A3). 35 ppm. Warm-up time. 100 s. Time to first page (black, normal). 5.3 s. N-in-1 print function. Yes. Watermark printing. Yes. Secure printing.